Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 107
the glass. If youhad a flat, thick piece of glass, the ray of light wouldtake the course that is shown in the preceding figure,in which we see that its path before it enters the glass,and its path after it leaves the glass, are in the samedirection (though not in the same line), while, how-ever,… … Fig- 3? when viewed standing up it has the appearance of fig.34. Such a piece of glass is calleda prism. Let us now see in whatmanner a ray of light will be bentin passing through a prism. Thisis exhibited in figure -t,-^, fromwhich you see that the ray is benttowards the thick part of the…
Physics
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